Wrench



D. C. KERR.

WRENCH.

APPLICATION FILED MAY 19, 1920.

1 37 1 ,49 1 Patented Mar. 15, 1921.

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NORRIS PETERS Inc LIN-10.. WAsnmuroN D C UNITED STATES PATENT OFFICE.

'DAVID CLINTON KERR, F FLINT, MICHIGAN.

WRENCH.

. To all whom may concern:

Be it known that 1, DAVID CLINTON KERR, a citizen of the United States, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in \Vrenches, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to wrenches and particularly to the S-type of wrench.

An object of the invention is to provide a wrench of this character wherein the wrench can be adjusted to accommodate nuts and fastening devices of various sizes without the use of a screw or like adjusting means.

Another object is to provide a wrench including fixed jaws on its ends,'the distance between said jawsbeing decreased by means of an auxiliary jaw carried by the wrench body, the auxiliary jaw including a lug which prevents'said jaw from closing the entrance to the jaws of the wrench.

A further object is to provide a wrench of this character including an auxiliary jaw member capable of being bent over the wrench to engage one of the jaws thereof and at the same time is firmly braced and immune from accidental disengagement from the jaw of the wrench.

A still further object of the invention is to provide a wrench of this character including a resilient reinforcing member for holding the arm of the auxiliary jaw firmly in engagement with the wrench, the reinforcing member extending on both sides of the pivot of the arm of the wrench, to firmly hold the arm in engagement with the wrench and compensate for wear of the pivot connection.

Vith these and other objects in view, the invention consists in the improved construction and arrangement of parts to be hereinafter more particularly described, fully claimed and illustrated in the accompany ing drawings, in which:

Figure 1 is a plan view of a wrench constructed in accordance with an embodiment of the invention.

Fig. 2 is an edge view, the dotted lines showing the manner of applying the auxiliary jaw to the jaw of the wrench.

Fig. 3 is a section taken on the line 33 of Fig. 1.

Fig. 4 is a perspective view'of one of the auxiliary jaw arms.

Referring to the drawings, 5 designates Specification of Letters Patent.

Patented Mar. 15, 1921.

1920. Serial No. 382,546.

the body of a wrench which may be either a S-type or straight wrench. Each end of the body -5 is enlarged and provided with rigid jaws 6 and 7 the space between the jaws 6 being greater than the space between the jaws 7 so as to permit the wrench to be used in connection with various sizes of fastening means. An opening 8 is formed in the central portion of the body member 5, the purpose of which will be hereinafter described.

In order to reduce the distance between the jaws on each end of the wrench, an arm 9 is disposed on each side of the wrench body 5. This arm coincides with the side portion of the body and has projecting from its end 10 an auxiliary jaw 11. This jaw is struck from the arm and extends in right angle relation to said arm. A lug 12 is also struck from the edge of the end 10 of the arm remote from the jaw 11. The lug 12 extends in right angular relation to the arm and in parallel relation to: the jaw 11. The arm 9 is preferably constructed from sheet metal containing a limited amount of resiliency. An opening 13 is formed adjacent the end 14 of the arm and is adapted to receive a bolt or like fastening means 16 which is ex tended through the opening 8 of the wrench.

By this means the arm 9 is pivoted on the body of the wrench.

To prevent accidental flexing or disengagement of the auxiliary jaw from the jaws of the wrench, a reinforcing member 17 is provided. This member is preferably constructed of sheet metal containing a limited amount of. resiliency. An opening 18 is formed in the central portion of the member 1'? and is adapted to receive fastening means 16. It will be noted that the ends of the member 17 extend equally on each side of the. )ivotal connection or fastenin means 16 so that in this way the intermediate and end portions of the arm are not only'braced, but the arm is held firmly at its pivoted connection. A rivet 19 is passed through one end portion of the reinforcing member and through the arm 9 to prevent movement of the reinforcing member 17 independently of the arm 9. The other end portion of the reinforcing member 17 is not fastened to the arm This is for the purpose of permitting said end portion to flex with the arm 9 when the jaw 11 is being applied to the wrench. It will be noted that the pivotal cormection of the arm is not at the end -member were integral;

of the arm but a considerable distance from the end and intermediate portion of the arm. In this way, the pivotal connection is firmly braced so that danger of the same becoming loose or being pried by the end of the armjs eliminated. Furthermore, as the member 17 extends on both sides of the pivot, by tightening the fastening means '16 it forces the end portion of the member 17 into firm engagement with the arm of the wrench, thereby providing a bracing force which'would beimpossible if the arm and reinforcing One of. the reinforcing members 17 is disposed in engagement with each of the arms,-which, as previously stated, are disposed on each side of the wrench and are capable of coiiperating with either set of jaws of the wrench so that the range of the variety of adjustments of the wrench is greatly enlarged.

When it is desired to decrease the space between the fixed jaws of the wrench, the

. arm 9' is bent outwardly so as to permit the auxiliary jaw 11 to move over the adjacent I jaw of the wrench and engage'the inner surface thereof. The thickness of the jaw 11 will decrease the space between the jaws of the wrench. WVhen the jaw 11 is engaged with the jaw of the wrench, the lug 12 will engage'the rear portion of said jaw so as to prevent theauxiliary jaw 11 from. moving toward the opposite jaw of the wrench and thereby closing the opening between the jaws; Inthis way, the jaw 11 is held in the proper position at all times and cannot move in either direction until the arm v9 is bent outwardly by the operator to dis engage the jaw 11 from'the-jaw of the wrench. The aws of the arms 9 are'not of the same size, one being double that of the other, and iii-performing an operation with the wrench either one or neither, as may be required of the auxiliary jaws 11 may be applied at the end of the wrench used in performing the operation, and if not required are applied at the other end of thewrench anddo not. detract from the compactness or usefulness of the wrench.

serving 'as a handle to permit the proper 'mamp'ulation of the screw drlver and W111 be found very useful in removing rusted or tight screws. The arm 9 doesnot depend ward the side of the body portion 5.

view of thls novel connection, the wrenchentirely on its pivotal connection for holding it in engagement with the wrench. The,

pivotal connection is assisted in this respect by the reinforcingmember l7 whichis maybe subjected to rough-usage or heavy work without danger of the jaw 11 becoming ac-cidenta ly disengaged from the 'jaw of the wrench with which it is cooperating. The invention having been-set forth, what is claimed as new and useful is the ends of said body, an arm includlng a jaw on one end, said arm being pivoted'adjacent its otherend to the intermediate portion of the body, and a reinforcing member carried by the arm, said reinforcing member being arranged'to flex with andengage the arm at all times. 7

2. A wrench comprising a body, jaws on i. A wrench comprising a body, jaws on r each end of the body, an arm having a jaw on one end, said'jaw projectingfrom one edge of the in angular relation to tl e arm, a holding lug projecting fromthe opposite edge of the arm in parallel relation to the jaw of the arm,said lugbeingadapted to engage the outer surface of one of the jaws of the body to prevent movement cfthe jaw of the arm awayfrom-thejaw of'the boy when said jaw of the arm is engaged with the inner surface of said jaw ofthe body.

it wrench comprising a body, a fixed jaw on the end ofsaid body, an arm includ ing a jaw'on one end, a holding lug-projecting from said end of'the arm in spaced relation to the jaw tl1ereof, sa-id holding lug preventing movement laterally of the open- 'ing of the fixedjaw when the lug is engaged with a portion of the fixed j aw, and a mem ber carried by the pivoted end of the arm and arranged for movement therewith, said member preventing lateral movement of'the jaw of the arm and holding lug with re- 7 spect to the fiXGtljZLW when-said jaw ofthearm and holding lug are applied to the} fixedjaw of the body.

In testimony whereofI hereunto aflix my signature.

DAVID CLINTON KERR. 

